Hi there- I have a new oven I plan on hard wiring to existing three
wire 240 amp outlet. The new wiring has four wires and wiring
instructions give several options for wiring:


B. CONNECTING THE GREEN APPLIANCE WIRE TO THE
NUETRAL(WHITE)SUPPLY WIRE-WHERE LOCAL CODES PERMIT

1. Connect the green and white appliance wires to the
nuetral(white)supply wire in the junction box.

2. Connect the black appliance wire to the black(l1) power supply
wire in the junction box.

3. Connect the red appliance wire to the red(l2) power supply wire
in the junction box.


OR

C. CONNECTING THE GREEN APPLIANCE WIRE TO A GROUNDED SUPPLY WIRE OR A
GROUNDED COLD WATER PIPE-WHERE LOCAL CODES PERMIT.

1. seperate the green and white appliance wires

2. Connect the white appliance wire to the neutral(white)supply wire
in the junction box.

3. Connect the black appliance wire to the black(l1) supply wire in
the junction box.

4. Connect the red appliance wire to the red(l2) supply wire in the
junction box.

5. Connect the green appliance wire to a grounded supply wire in
the junction box or to a grounded cold water pipe.

6. If connecting to a grounded cold water pipe , a seperate copper
grounding wire(No. 10 min.) must be connected to a grounded cold water
pipe by means of a clamp and then to an external grounding connector
screw.


My question is the outlet has only red, black and white wires(three
wire). Is it safe to use step b for hard wiring regardless of local
code? Any help would be appreciated.